| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To dispense with a current transformer and a current detecting resistor required when detecting a large current, and to detect the large current compactly and inexpensively at a low noise, using a wiring pattern of a general printed board. <P>SOLUTION: In the current detection substrate, the wiring pattern in which a main circuit current flows on the printed board is formed, and one part of the wiring pattern acts as a detection resistance for detecting the current. The current detection substrate is provided with a heat radiator coupled thermally to the current detecting wiring pattern and not forming a route for the main circuit current. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
